将编码的json推入另一个json

Question

我将我的结果编码为json，我想将它们合并。 我希望实现这一目标

[
    {
        "post_id": 1,
        "content": "test image feature",
        "date": "0000-00-00",
        "category_id": 1,
        "lp_title": "",
        "lp_image": "",
        "lp_canonicalUrl": "",
        "lp_url": "",
        "lp_desc": "",
        "lp_iframe": "",
        "lp_iframe_id": ""
        "img_src" [{img_src:1.jpg},{img_src:2.jpg}]
    }
]

http://pastebin.com/7jKp9BUn

每个语句的结果

[
    {
        "img_src": "1.jpg"
    },
    {
        "img_src": "2.jpg"
    }
]

下一个

[
    {
        "post_id": 1,
        "content": "test image feature",
        "date": "0000-00-00",
        "category_id": 1,
        "lp_title": "",
        "lp_image": "",
        "lp_canonicalUrl": "",
        "lp_url": "",
        "lp_desc": "",
        "lp_iframe": "",
        "lp_iframe_id": ""
    }
]

Answer 1

您可以将JSON解码为数组，将JSON追加到另一个数组，然后重新编码：

$s1 = '[
    {
        "img_src": "1.jpg"
    },
    {
        "img_src": "2.jpg"
    }
]';
$s2 = '[
    {
        "post_id": 1,
        "content": "test image feature",
        "date": "0000-00-00",
        "category_id": 1,
        "lp_title": "",
        "lp_image": "",
        "lp_canonicalUrl": "",
        "lp_url": "",
        "lp_desc": "",
        "lp_iframe": "",
        "lp_iframe_id": ""
    }
]';

//decode each
$arr1 = json_decode($s1, true);
$arr2 = json_decode($s2, true);
$arr2[0]['img_src'] = $arr1;
//re-encode as a JSON string and show output
$sf = json_encode($arr2);
echo $sf;

这应该给出您所描述的结果，并以“ img_src” ...作为较大集合的子数组。

Answer 2

查看您的php代码，您也可以一次完成此操作。

$stmt = $db->prepare("
SELECT  post_id,content,date,category_id,lp_title,lp_image,lp_canonicalUrl,lp_url,lp_desc,lp_iframe,lp_iframe_id
    FROM post_items inner JOIN user ON post_items.user_id = user.user_id
    WHERE post_items.user_id = ? order by post_items.post_id desc LIMIT ?,?");

$stmt->bind_param('iii', $userid, $itemStart, $itemEnd);

$stmt2 = $db->prepare("SELECT photo_upload.img_src FROM photo_upload inner JOIN post_items ON post_items.photo_set_id = photo_upload.photo_set_id 
     WHERE post_items.photo_set_id = photo_upload.photo_set_id ");

//store the images in a separate array
$imgArray = array();
if ($stmt2->execute()) {
    $photo_items = $stmt2->get_result();

    while ($obj2 = $photo_items->fetch_object()) {
        $imgArray[] = $obj2;
    }       
}

if($stmt->execute()){

    $post_items = $stmt->get_result();

    if(mysqli_num_rows($post_items) > 0){
        while ($obj = $post_items->fetch_object()) {

            $jsonData[] = $obj;
                    // check if there are any elements in the array
             if(count($imgArray) > 0){
                 // set the img_src index of the jsonData array with the elements of the other array
                $jsonData['img_src'] = $imgArray;
             }
        }




        $i = json_encode($jsonData);

        echo $i;

    }
}